package cn.wu.reggie.config;

import cn.wu.reggie.interceptor.LoginCheckInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.List;

/**
 * 该类的主要目的：配置springmvc配置，比如：注册拦截器，注册静态资源处理方式
 */

@Configuration
@Slf4j
public class WebMvcConfig extends WebMvcConfigurationSupport {
    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("===========静态资源处理=================");
        //1. 注册backend静态资源处理方式 **匹配多级路径
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        //1. 注册front静态资源处理方式
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    // 添加拦截器
    protected void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginCheckInterceptor)
                .addPathPatterns("/**")
                .excludePathPatterns("/user/sendMsg","/user/login","/common/**","/employee/login",
                        "/backend/**","/front/**", "/addr/**",
                        "/doc.html",
                        "/webjars/**",
                        "/swagger-resources",
                        "/v2/api-docs");

        //注意 静态资源也是会通过springmvc拦截后放行
    }


    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }

    @Bean
    public Docket createRestApi() {
        // 文档类型
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                //告诉swagger：对指定的包下controller生成接口文档
                .apis(RequestHandlerSelectors.basePackage("cn.wu.reggie.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    //注意：导入springfox.documentation.service.ApiInfo
    private ApiInfo apiInfo() {
        //给生成的接口文档配置描述信息
        return new ApiInfoBuilder()
                .title("瑞吉外卖")
                .version("1.0")
                .description("瑞吉外卖接口文档")
                .build();
    }
}